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J. W. GALLOWAY.

ROLLER MILL Patented Mar. 3, 1885.

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JAMES W. GALLOYVAY, OF DAYTON, OHIO, ASSIGNOR TO STOUT, MILLS & TEMPLE,OF SAME PLACE.

ROLLER-MILL.

SPECIFICATION forming part of Letters Patent No. 313,312, dated March 3,1885.

Application filed May 20, 1884. (No model.)

To aZZ whom it may concern:

Be it known that 1, JAMES W. GALLOWAY, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Roller-Mills, of whichthe following is a full, clear, and exact description, reference beinghad to the accompanying drawings, forming-apart ofthis specification.

My invention relates to that class of rollermills for making fiour knownas gradual-re duction mills, in which the product is fed into and from ahopper to one or more pairs of differentially-running grinding orcrushing rolls, usually having corrugateddress, and

has for its object the production of a novel automatic feed mechanism.

The novelty consists in the construction and combination of the parts,as will be herewith set forth and specifically claimed.

In the accompanying drawings, Figure 1 is a side elevation, partly insection, of so much of a double roller mill as illustrates my invention.Fig. 2 is an end elevation of the hopper, showing a front elevation ofthe adjusting-gate.

The sameletters of reference are used to in dicate corresponding partsin all the figures.

The general construction and framework of the mill may be that shown anddescribed in the patents of John Livingston, No. 280,195, June 26, 1883;No. 284,135, August 28, 1883, and of H. J. Gilbert, No. 280,170, June26, 1883, and I will only stop to say that A is the frame-work, B thehopper, G the grinding rolls, D the feed-rolls, E the adjustablejournal-arms, F the oscillating through-shaft, and Gthe rods connectingthe journal-arms and the through-shaft.

H are the cut-off gates, operated by the mechanism shown in the PatentNo. 280,195, above referred to, or by any other suitable mechanism.

I are the feed-adjusting gates upon the ends of the hopper, andsupported by and sliding in a frame, J, of the usual or any suitableconstruction. Each of the gates I is supported and adjusted by twobolts, K, having enlarged lower threaded ends engaging with perforatedand threaded lugs or cars a, projecting from the gate, as shown. Thebolts pass up through suitably-perforated guide ears I), projecting fromthe frame J, as shown, and have enlargements or collars 0 just above theears I), and

also second upper enlargements or collars, d, terminating in thumbheadsc. Upon the threaded lower portions of the bolts K are nuts f, betweenwhich and the ears b,and surrounding the bolts,are spiral springs g,which serve as tension-springs to hold the gate down, except ashereinafter stated, From this construction it will be seen that byturning the bolts K by hand the gate can beadjusted up or down by thelugs a, traveling up or down on the lower threaded ends of the bolts,withoutaffecting the tension of the springs g, which can beindependently regulated as desired by the nuts f.

Passing through apertures in the end of the hopper, and in this instancefulcrumed in slotted plates L, are two curved lever-arms, M, of theshape shown, whose outer projecting ends, 1', are forked, so as toembrace the bolts K and bear against'the under sides of the collars d.

Suitably hinged or pivoted at h is a pressureboard, N, within thehopper, and resting and supported in an inclined position upon thelever-arms M, as shown in Fig. 1. The expansive force of the springs g,in connection with the weight of the gate, holds the arms M up to theirfarthest limit, except at such times as the weight or pressure of theproduct on the board N presses them down, and through the medium of theforks t raises the gate, as will be readily understood. Upon the removalof the pressure, the springs, reacting, close the gate. The limit ofplay of the gate downward can be regulated by turning the bolts K, whileits upward playis limited by a check-screw, 0, passed through the end ofthe hopper, and against which the pressure-board strikes, and isarrested at any desired point. The degree of resistance in lifting thegate can be regulated by the adjustment of the tension of the springs gthrough the medium of the nutsf, and this tension once adjusted is notdisturbed by the raising or lowering of the gate by turning the bolts K.

I do not wish to limit myself to the means detailed for uniting thelever-arms M and bolts K, nor to the manner in which the lever-arms Mare pivoted or fulcrumed; but,

Having thus fully described my invention, I claim- 1. The combination,with the hopper, the gate 1, having ears orlugs a, and the frame J,having ears b, of the bolts K, threaded at their lower ends and engagingwith said lugs upon the gate, and having collars engaging with said earsupon the frame and upper collars, the lifting-levers, and a hingedpressure-board within the hopper, substantially as described.

2. Thecombination,withthe pressure-board N, lifting-levers M, gate I,and its frame J, of the bolts K, having enlarged lower threaded ends forengagement with the gate, and upper double collared ends, eachterminating in a thumb-head, springs g surrounding the bolts, andtension-regulating nuts f upon the enlarged lower threaded ends of thebolts, substantially as described.

3. The combination, with the hinged pressure-board N, gate I, frame J,and actuatingbolts K.of the curved fulcrumed levers M,having their outerends engaging with the bolts K and their inner ends with thepressure-board N, substantially as described.

'4. The combination of the hinged pressureboard N, levers M, bolts K,gate I, and frame J, of a check-screw or adjustable stop, 0, passedthrough the hopper and adapted to engage with the pressure-board at anypoint desired, substantially as described.

JAMES W. GALLOWAY.

Witnesses:

\ D. T. MiLLs,

EDWIN P. MATTHEWS.

